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How to use a cable reel without overheating the drum

Updated: 23 October 2026

The lead is still tight on the reel, and you want a heater or a site tool to run for an hour. How to use a cable reel starts with that coil. Current in a tight bundle has little way to shed heat, and the cut-out, where the drum has one, is there to open before the sheath cooks. This page walks through unwind, a shared inlet, a cut-out reset, and IP44 on the [CEE cable reel comparison](/hub/sockets-and-extension-leads/cee-cable-reel). It does not rank the drums. A qualifying purchase can earn a commission at no extra cost to you.

The lead is still tight on the reel, and you want a heater or a site tool to run for an hour. How to use a cable reel starts with that coil.

Our top picks

Brennenstuhl Brennenstuhl Garant 25 m orange CEE reel

Best overall

Brennenstuhl Brennenstuhl Garant 25 m orange CEE reel
8.8/10about £126.32
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VonLux VonLux 10 m camping hook-up reel

Best value

VonLux VonLux 10 m camping hook-up reel
8.1/10about £33.90
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Brennenstuhl Brennenstuhl Garant CEE 2 25 m reel

Alternative

Brennenstuhl Brennenstuhl Garant CEE 2 25 m reel
7.9/10about £160.42
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On this page
  1. 1.Unwind before you load it
  2. 2.The sockets share one supply
  3. 3.Reset a cut-out, do not hold it in
  4. 4.IP44 is splash, including while the plug is out

Unwind before you load it

Pull the cable off until the drum is empty, or until you are inside a wound rating if the maker has printed one. None of the five listings prints a coiled-watt figure in the bullets. Electrical Safety First says a wound household reel is often only about 3 A or 4 A once the cable is off. That is not a measurement of these CEE drums. On the blue 25 m Brennenstuhl, reviewers say the cut-out trips under a higher load unless the cable is fully unwound. If the sheath is cut, crushed, or taped, stop. The buying guide is where the cable code is chosen.

The sockets share one supply

Two CEE sockets, or four UK sockets on the hook-up reel, are outlets from a single inlet. A pair of 16 A faces is not a 32 A feed. Add the appliances before you switch them on. Do not daisy-chain a second reel. The orange 25 m reel’s bullets do not name a cut-out. The blue 25 m reel, the 30 m five-core reel, the VonLux reel, and the 14 m 110 V reel do. A cut-out does not grant an extra 16 A to the second socket. A new temporary distribution on a site belongs to a competent person under BS 7375.
Brennenstuhl Brennenstuhl Garant 25 m orange CEE reel

Testsieger

Brennenstuhl Brennenstuhl Garant 25 m orange CEE reel
8.8/10about £126.32
View offer

Reset a cut-out, do not hold it in

When the drum goes dead, switch the load off and let the reel cool with the cable unwound. Reset a non-self-resetting cut-out by hand after it has cooled. IEC 61316 expects a thermal cut-out you cannot adjust, and a trip-free mechanism you cannot hold closed while the reel is still too hot. Reset once, with the heavy load unplugged. If it opens again with little connected, stop. On the orange Brennenstuhl, reviews describe a reset button that broke after three test presses. The bullets still omit the device. Do not open the case to bridge the button.

IP44 is splash, including while the plug is out

IP44 keeps out objects larger than 1 mm and resists splashes. The IP44 rating is not claimed while you are mating the plug. Get the plug fully home, or close the lid, before you leave it in the wet. A title that says waterproof does not upgrade IP44. None of the five listings names an RCD on the drum. A hot socket or a burning smell means you disconnect at the supply and stop. Yellow versus blue is on the 110V or 230V cable reel page.

Common questions

Do you unwind the whole drum if you only need a few metres?
Yes, when you are about to draw a serious load. Heat builds in the turns that stay on the drum. Lay the spare in a loose loop where a door or a hitch will not crush it. A short lamp test is lighter than an hour of heating. If the listing gives no coiled rating, full unwind is the safe default.
What should you do when the cut-out trips?
Switch the appliances off, unplug them, and leave the drum to cool with the cable unwound. Reset once. If it trips again with the load removed, or in strong sun as some orange-reel reviews describe, take the reel out of service. Do not keep resetting it under the same load that opened it.
Can you hold the reset in so the reel keeps running?
A trip-free cut-out is built so you cannot hold it closed while the reel is overheating. Tape or a finger on the button removes that protection. IEC 61316 treats the thermal device as something you do not adjust. If the job only finishes with the button defeated, the job waits for a drum that will carry the load unwound.
Is IP44 safe in heavy rain or a puddle?
IP44 is splash protection, not immersion. Fully mated or fully disconnected, the connector is in its rated state. Half-inserted, it is not. A short shower is the water reviewers on the blue 25 m reel were willing to accept. Keep the reel out of a flooded patch and close the socket lids.
Can both sockets draw 16 A together?
They share the inlet. Two 16 A faces do not add up to 32 A. The supply, the cable, and the cut-out all see the sum. On a 16 A CEE circuit, plan the total before you plug the second tool in. A second heater belongs on another supply if the first load is already near the inlet rating.
What smell or heat means you unplug and stop?
A hot socket, a smell of hot plastic, or brown marks on a pin means you disconnect at the supply and leave the reel unused. A cut-out that opens on no load, or that will not stay reset, is the same stop, as is a split sheath. A 13 A fuse does not cover heat in a coil below its current rating. Those faults wait for a competent person, as does a new temporary site supply.

Related pages

Camping hook up cable reel

CEE cable reel

110V or 230V cable reel: yellow after the transformer

Best CEE cable reel: which drum matches your plugs

CEE cable reel: the checks before you choose a drum

Sources

Sources taken from the research digest. Listings were scored in October 2026. This page did not run a lab test.

  1. HSE — Electrically powered equipment (retrieved 22.10.2026)
  2. HSE — HSG141 Electrical safety on construction sites (retrieved 22.10.2026)
  3. HSE — HSR25 Memorandum of guidance on the Electricity at Work Regulations (retrieved 22.10.2026)
  4. Electrical Safety First — Extension leads, cable reels and block adaptors (retrieved 22.10.2026)
  5. BSI — BS EN 61242 Cable reels for household use (retrieved 22.10.2026)
  6. IEC — IEC 61316:2021 Industrial cable reels (retrieved 22.10.2026)
  7. IET Wiring Matters — BS 7671 section 708 caravan pitches (retrieved 22.10.2026)
  8. Caravan and Motorhome Club — Cable news (retrieved 22.10.2026)